APA

Kapfer P. G., Ovard G. F., . (1971). Preparing and using individualized learning packages for ungraded, continuous progress education. [Englewood Cliffs, N.J: Educational Technology Publications.

Chicago

Kapfer Philip G, Ovard Glen F, . 1971. Preparing and using individualized learning packages for ungraded, continuous progress education. [Englewood Cliffs, N.J: Educational Technology Publications.

Harvard

Kapfer P. G., Ovard G. F., . (1971). Preparing and using individualized learning packages for ungraded, continuous progress education. [Englewood Cliffs, N.J: Educational Technology Publications.

MLA

Kapfer Philip G, Ovard Glen F, . Preparing and using individualized learning packages for ungraded, continuous progress education. [Englewood Cliffs, N.J: Educational Technology Publications. 1971.